options.c

   1 /*  -*- c-file-style: "linux" -*-
   2  *
   3  * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
   4  * Copyright (C) 2000, 2001, 2002 by Martin Pool <mbp@samba.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "rsync.h"
  22 #include <popt.h>
  23 #include "zlib/zlib.h"
  24
  25 extern int module_id;
  26 extern int sanitize_paths;
  27 extern struct filter_list_struct filter_list;
  28 extern struct filter_list_struct server_filter_list;
  29
  30 int make_backups = 0;
  31
  32 /**
  33  * If 1, send the whole file as literal data rather than trying to
  34  * create an incremental diff.
  35  *
  36  * If -1, then look at whether we're local or remote and go by that.
  37  *
  38  * @sa disable_deltas_p()
  39  **/
  40 int whole_file = -1;
  41
  42 int append_mode = 0;
  43 int keep_dirlinks = 0;
  44 int copy_dirlinks = 0;
  45 int copy_links = 0;
  46 int preserve_links = 0;
  47 int preserve_hard_links = 0;
  48 int preserve_perms = 0;
  49 int preserve_executability = 0;
  50 int preserve_devices = 0;
  51 int preserve_specials = 0;
  52 int preserve_uid = 0;
  53 int preserve_gid = 0;
  54 int preserve_times = 0;
  55 int omit_dir_times = 0;
  56 int update_only = 0;
  57 int cvs_exclude = 0;
  58 int dry_run = 0;
  59 int do_xfers = 1;
  60 int ignore_times = 0;
  61 int delete_mode = 0;
  62 int delete_during = 0;
  63 int delete_before = 0;
  64 int delete_after = 0;
  65 int delete_excluded = 0;
  66 int remove_sent_files = 0;
  67 int one_file_system = 0;
  68 int protocol_version = PROTOCOL_VERSION;
  69 int sparse_files = 0;
  70 int do_compression = 0;
  71 int def_compress_level = Z_DEFAULT_COMPRESSION;
  72 int am_root = 0;
  73 int am_server = 0;
  74 int am_sender = 0;
  75 int am_generator = 0;
  76 int am_starting_up = 1;
  77 int relative_paths = -1;
  78 int implied_dirs = 1;
  79 int numeric_ids = 0;
  80 int allow_8bit_chars = 0;
  81 int force_delete = 0;
  82 int io_timeout = 0;
  83 int allowed_lull = 0;
  84 int prune_empty_dirs = 0;
  85 char *files_from = NULL;
  86 int filesfrom_fd = -1;
  87 char *filesfrom_host = NULL;
  88 int eol_nulls = 0;
  89 int human_readable = 0;
  90 int recurse = 0;
  91 int xfer_dirs = -1;
  92 int am_daemon = 0;
  93 int daemon_over_rsh = 0;
  94 int do_stats = 0;
  95 int do_progress = 0;
  96 int keep_partial = 0;
  97 int safe_symlinks = 0;
  98 int copy_unsafe_links = 0;
  99 int size_only = 0;
 100 int daemon_bwlimit = 0;
 101 int bwlimit = 0;
 102 int fuzzy_basis = 0;
 103 size_t bwlimit_writemax = 0;
 104 int ignore_existing = 0;
 105 int ignore_non_existing = 0;
 106 int need_messages_from_generator = 0;
 107 int max_delete = 0;
 108 OFF_T max_size = 0;
 109 OFF_T min_size = 0;
 110 int ignore_errors = 0;
 111 int modify_window = 0;
 112 int blocking_io = -1;
 113 int checksum_seed = 0;
 114 int inplace = 0;
 115 int delay_updates = 0;
 116 long block_size = 0; /* "long" because popt can't set an int32. */
 117
 118
 119 /** Network address family. **/
 120 #ifdef INET6
 121 int default_af_hint = 0;        /* Any protocol */
 122 #else
 123 int default_af_hint = AF_INET;  /* Must use IPv4 */
 124 #endif
 125
 126 /** Do not go into the background when run as --daemon.  Good
 127  * for debugging and required for running as a service on W32,
 128  * or under Unix process-monitors. **/
 129 int no_detach
 130 #if defined _WIN32 || defined __WIN32__
 131         = 1;
 132 #else
 133         = 0;
 134 #endif
 135
 136 int write_batch = 0;
 137 int read_batch = 0;
 138 int backup_dir_len = 0;
 139 int backup_suffix_len;
 140 unsigned int backup_dir_remainder;
 141
 142 char *backup_suffix = NULL;
 143 char *tmpdir = NULL;
 144 char *partial_dir = NULL;
 145 char *basis_dir[MAX_BASIS_DIRS+1];
 146 char *config_file = NULL;
 147 char *shell_cmd = NULL;
 148 char *log_format = NULL;
 149 char *password_file = NULL;
 150 char *rsync_path = RSYNC_PATH;
 151 char *backup_dir = NULL;
 152 char backup_dir_buf[MAXPATHLEN];
 153 char *sockopts = NULL;
 154 int rsync_port = 0;
 155 int compare_dest = 0;
 156 int copy_dest = 0;
 157 int link_dest = 0;
 158 int basis_dir_cnt = 0;
 159 char *dest_option = NULL;
 160
 161 int verbose = 0;
 162 int quiet = 0;
 163 int log_before_transfer = 0;
 164 int log_format_has_i = 0;
 165 int log_format_has_o_or_i = 0;
 166 int always_checksum = 0;
 167 int list_only = 0;
 168
 169 #define MAX_BATCH_NAME_LEN 256  /* Must be less than MAXPATHLEN-13 */
 170 char *batch_name = NULL;
 171
 172 struct chmod_mode_struct *chmod_modes = NULL;
 173
 174 static int daemon_opt;   /* sets am_daemon after option error-reporting */
 175 static int F_option_cnt = 0;
 176 static int modify_window_set;
 177 static int itemize_changes = 0;
 178 static int refused_delete, refused_archive_part, refused_compress;
 179 static int refused_partial, refused_progress, refused_delete_before;
 180 static int refused_inplace;
 181 static char *max_size_arg, *min_size_arg;
 182 static char tmp_partialdir[] = ".~tmp~";
 183
 184 /** Local address to bind.  As a character string because it's
 185  * interpreted by the IPv6 layer: should be a numeric IP4 or IP6
 186  * address, or a hostname. **/
 187 char *bind_address;
 188
 189
 190 static void print_rsync_version(enum logcode f)
 191 {
 192         char const *got_socketpair = "no ";
 193         char const *have_inplace = "no ";
 194         char const *hardlinks = "no ";
 195         char const *links = "no ";
 196         char const *ipv6 = "no ";
 197         STRUCT_STAT *dumstat;
 198
 199 #ifdef HAVE_SOCKETPAIR
 200         got_socketpair = "";
 201 #endif
 202
 203 #ifdef HAVE_FTRUNCATE
 204         have_inplace = "";
 205 #endif
 206
 207 #ifdef SUPPORT_HARD_LINKS
 208         hardlinks = "";
 209 #endif
 210
 211 #ifdef SUPPORT_LINKS
 212         links = "";
 213 #endif
 214
 215 #ifdef INET6
 216         ipv6 = "";
 217 #endif
 218
 219         rprintf(f, "%s  version %s  protocol version %d\n",
 220                 RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION);
 221         rprintf(f, "Copyright (C) 1996-2006 by Andrew Tridgell, Wayne Davison, and others.\n");
 222         rprintf(f, "<http://rsync.samba.org/>\n");
 223         rprintf(f, "Capabilities: %d-bit files, %ssocketpairs, "
 224                 "%shard links, %ssymlinks, batchfiles,\n",
 225                 (int) (sizeof (OFF_T) * 8),
 226                 got_socketpair, hardlinks, links);
 227
 228         /* Note that this field may not have type ino_t.  It depends
 229          * on the complicated interaction between largefile feature
 230          * macros. */
 231         rprintf(f, "              %sinplace, %sIPv6, "
 232                 "%d-bit system inums, %d-bit internal inums\n",
 233                 have_inplace, ipv6,
 234                 (int) (sizeof dumstat->st_ino * 8),
 235                 (int) (sizeof (int64) * 8));
 236 #ifdef MAINTAINER_MODE
 237         rprintf(f, "Panic Action: \"%s\"\n", get_panic_action());
 238 #endif
 239
 240 #if SIZEOF_INT64 < 8
 241         rprintf(f, "WARNING: no 64-bit integers on this platform!\n");
 242 #endif
 243         if (sizeof (int64) != SIZEOF_INT64) {
 244                 rprintf(f,
 245                         "WARNING: size mismatch in SIZEOF_INT64 define (%d != %d)\n",
 246                         (int) SIZEOF_INT64, (int) sizeof (int64));
 247         }
 248
 249         rprintf(f,"\nrsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you\n");
 250         rprintf(f,"are welcome to redistribute it under certain conditions.  See the GNU\n");
 251         rprintf(f,"General Public Licence for details.\n");
 252 }
 253
 254
 255 void usage(enum logcode F)
 256 {
 257   print_rsync_version(F);
 258
 259   rprintf(F,"\nrsync is a file transfer program capable of efficient remote update\n");
 260   rprintf(F,"via a fast differencing algorithm.\n");
 261
 262   rprintf(F,"\nUsage: rsync [OPTION]... SRC [SRC]... DEST\n");
 263   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
 264   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 265   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST\n");
 266   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC [DEST]\n");
 267   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
 268   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 269   rprintf(F,"The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect\n");
 270   rprintf(F,"to an rsync daemon, and require SRC or DEST to start with a module name.\n");
 271   rprintf(F,"\nOptions\n");
 272   rprintf(F," -v, --verbose               increase verbosity\n");
 273   rprintf(F," -q, --quiet                 suppress non-error messages\n");
 274   rprintf(F," -c, --checksum              skip based on checksum, not mod-time & size\n");
 275   rprintf(F," -a, --archive               archive mode; same as -rlptgoD (no -H)\n");
 276   rprintf(F,"     --no-OPTION             turn off an implied OPTION (e.g. --no-D)\n");
 277   rprintf(F," -r, --recursive             recurse into directories\n");
 278   rprintf(F," -R, --relative              use relative path names\n");
 279   rprintf(F,"     --no-implied-dirs       don't send implied dirs with --relative\n");
 280   rprintf(F," -b, --backup                make backups (see --suffix & --backup-dir)\n");
 281   rprintf(F,"     --backup-dir=DIR        make backups into hierarchy based in DIR\n");
 282   rprintf(F,"     --suffix=SUFFIX         set backup suffix (default %s w/o --backup-dir)\n",BACKUP_SUFFIX);
 283   rprintf(F," -u, --update                skip files that are newer on the receiver\n");
 284   rprintf(F,"     --inplace               update destination files in-place (SEE MAN PAGE)\n");
 285   rprintf(F,"     --append                append data onto shorter files\n");
 286   rprintf(F," -d, --dirs                  transfer directories without recursing\n");
 287   rprintf(F," -l, --links                 copy symlinks as symlinks\n");
 288   rprintf(F," -L, --copy-links            transform symlink into referent file/dir\n");
 289   rprintf(F,"     --copy-unsafe-links     only \"unsafe\" symlinks are transformed\n");
 290   rprintf(F,"     --safe-links            ignore symlinks that point outside the source tree\n");
 291   rprintf(F," -k, --copy-dirlinks         transform symlink to a dir into referent dir\n");
 292   rprintf(F," -K, --keep-dirlinks         treat symlinked dir on receiver as dir\n");
 293   rprintf(F," -H, --hard-links            preserve hard links\n");
 294   rprintf(F," -p, --perms                 preserve permissions\n");
 295   rprintf(F," -E, --executability         preserve the file's executability\n");
 296   rprintf(F,"     --chmod=CHMOD           change destination permissions\n");
 297   rprintf(F," -o, --owner                 preserve owner (super-user only)\n");
 298   rprintf(F," -g, --group                 preserve group\n");
 299   rprintf(F,"     --devices               preserve device files (super-user only)\n");
 300   rprintf(F,"     --specials              preserve special files\n");
 301   rprintf(F," -D                          same as --devices --specials\n");
 302   rprintf(F," -t, --times                 preserve times\n");
 303   rprintf(F," -O, --omit-dir-times        omit directories when preserving times\n");
 304   rprintf(F,"     --super                 receiver attempts super-user activities\n");
 305   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 306   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 307   rprintf(F," -W, --whole-file            copy files whole (without rsync algorithm)\n");
 308   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 309   rprintf(F," -B, --block-size=SIZE       force a fixed checksum block-size\n");
 310   rprintf(F," -e, --rsh=COMMAND           specify the remote shell to use\n");
 311   rprintf(F,"     --rsync-path=PROGRAM    specify the rsync to run on the remote machine\n");
 312   rprintf(F,"     --existing              ignore non-existing files on receiving side\n");
 313   rprintf(F,"     --ignore-existing       ignore files that already exist on receiving side\n");
 314   rprintf(F,"     --remove-sent-files     sent files/symlinks are removed from sending side\n");
 315   rprintf(F,"     --del                   an alias for --delete-during\n");
 316   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 317   rprintf(F,"     --delete-before         receiver deletes before transfer (default)\n");
 318   rprintf(F,"     --delete-during         receiver deletes during transfer, not before\n");
 319   rprintf(F,"     --delete-after          receiver deletes after transfer, not before\n");
 320   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
 321   rprintf(F,"     --ignore-errors         delete even if there are I/O errors\n");
 322   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 323   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 324   rprintf(F,"     --max-size=SIZE         don't transfer any file larger than SIZE\n");
 325   rprintf(F,"     --min-size=SIZE         don't transfer any file smaller than SIZE\n");
 326   rprintf(F,"     --partial               keep partially transferred files\n");
 327   rprintf(F,"     --partial-dir=DIR       put a partially transferred file into DIR\n");
 328   rprintf(F,"     --delay-updates         put all updated files into place at transfer's end\n");
 329   rprintf(F," -m, --prune-empty-dirs      prune empty directory chains from the file-list\n");
 330   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 331   rprintf(F,"     --timeout=TIME          set I/O timeout in seconds\n");
 332   rprintf(F," -I, --ignore-times          don't skip files that match in size and mod-time\n");
 333   rprintf(F,"     --size-only             skip files that match in size\n");
 334   rprintf(F,"     --modify-window=NUM     compare mod-times with reduced accuracy\n");
 335   rprintf(F," -T, --temp-dir=DIR          create temporary files in directory DIR\n");
 336   rprintf(F," -y, --fuzzy                 find similar file for basis if no dest file\n");
 337   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 338   rprintf(F,"     --copy-dest=DIR         ... and include copies of unchanged files\n");
 339   rprintf(F,"     --link-dest=DIR         hardlink to files in DIR when unchanged\n");
 340   rprintf(F," -z, --compress              compress file data during the transfer\n");
 341   rprintf(F,"     --compress-level=NUM    explicitly set compression level\n");
 342   rprintf(F," -C, --cvs-exclude           auto-ignore files the same way CVS does\n");
 343   rprintf(F," -f, --filter=RULE           add a file-filtering RULE\n");
 344   rprintf(F," -F                          same as --filter='dir-merge /.rsync-filter'\n");
 345   rprintf(F,"                             repeated: --filter='- .rsync-filter'\n");
 346   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 347   rprintf(F,"     --exclude-from=FILE     read exclude patterns from FILE\n");
 348   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 349   rprintf(F,"     --include-from=FILE     read include patterns from FILE\n");
 350   rprintf(F,"     --files-from=FILE       read list of source-file names from FILE\n");
 351   rprintf(F," -0, --from0                 all *-from/filter files are delimited by 0s\n");
 352   rprintf(F,"     --address=ADDRESS       bind address for outgoing socket to daemon\n");
 353   rprintf(F,"     --port=PORT             specify double-colon alternate port number\n");
 354   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 355   rprintf(F,"     --blocking-io           use blocking I/O for the remote shell\n");
 356   rprintf(F,"     --stats                 give some file-transfer stats\n");
 357   rprintf(F," -8, --8-bit-output          leave high-bit chars unescaped in output\n");
 358   rprintf(F," -h, --human-readable        output numbers in a human-readable format\n");
 359   rprintf(F,"     --progress              show progress during transfer\n");
 360   rprintf(F," -P                          same as --partial --progress\n");
 361   rprintf(F," -i, --itemize-changes       output a change-summary for all updates\n");
 362   rprintf(F,"     --log-format=FORMAT     output filenames using the specified format\n");
 363   rprintf(F,"     --password-file=FILE    read password from FILE\n");
 364   rprintf(F,"     --list-only             list the files instead of copying them\n");
 365   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 366   rprintf(F,"     --write-batch=FILE      write a batched update to FILE\n");
 367   rprintf(F,"     --only-write-batch=FILE like --write-batch but w/o updating destination\n");
 368   rprintf(F,"     --read-batch=FILE       read a batched update from FILE\n");
 369   rprintf(F,"     --protocol=NUM          force an older protocol version to be used\n");
 370 #ifdef INET6
 371   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 372   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 373 #endif
 374   rprintf(F,"     --version               print version number\n");
 375   rprintf(F,"(-h) --help                  show this help (-h works with no other options)\n");
 376
 377   rprintf(F,"\nUse \"rsync --daemon --help\" to see the daemon-mode command-line options.\n");
 378   rprintf(F,"Please see the rsync(1) and rsyncd.conf(5) man pages for full documentation.\n");
 379   rprintf(F,"See http://rsync.samba.org/ for updates, bug reports, and answers\n");
 380 }
 381
 382 enum {OPT_VERSION = 1000, OPT_DAEMON, OPT_SENDER, OPT_EXCLUDE, OPT_EXCLUDE_FROM,
 383       OPT_FILTER, OPT_COMPARE_DEST, OPT_COPY_DEST, OPT_LINK_DEST, OPT_HELP,
 384       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_MODIFY_WINDOW, OPT_MIN_SIZE, OPT_CHMOD,
 385       OPT_READ_BATCH, OPT_WRITE_BATCH, OPT_ONLY_WRITE_BATCH, OPT_MAX_SIZE,
 386       OPT_NO_D,
 387       OPT_SERVER, OPT_REFUSED_BASE = 9000};
 388
 389 static struct poptOption long_options[] = {
 390   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 391   {"help",             0,  POPT_ARG_NONE,   0, OPT_HELP, 0, 0 },
 392   {"version",          0,  POPT_ARG_NONE,   0, OPT_VERSION, 0, 0},
 393   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 394   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 395   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 396   {"quiet",           'q', POPT_ARG_NONE,   0, 'q', 0, 0 },
 397   {"stats",            0,  POPT_ARG_NONE,   &do_stats, 0, 0, 0 },
 398   {"human-readable",  'h', POPT_ARG_NONE,   0, 'h', 0, 0},
 399   {"dry-run",         'n', POPT_ARG_NONE,   &dry_run, 0, 0, 0 },
 400   {"archive",         'a', POPT_ARG_NONE,   0, 'a', 0, 0 },
 401   {"recursive",       'r', POPT_ARG_VAL,    &recurse, 2, 0, 0 },
 402   {"no-recursive",     0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 403   {"no-r",             0,  POPT_ARG_VAL,    &recurse, 0, 0, 0 },
 404   {"dirs",            'd', POPT_ARG_VAL,    &xfer_dirs, 2, 0, 0 },
 405   {"no-dirs",          0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 406   {"no-d",             0,  POPT_ARG_VAL,    &xfer_dirs, 0, 0, 0 },
 407   {"perms",           'p', POPT_ARG_VAL,    &preserve_perms, 1, 0, 0 },
 408   {"no-perms",         0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 409   {"no-p",             0,  POPT_ARG_VAL,    &preserve_perms, 0, 0, 0 },
 410   {"executability",   'E', POPT_ARG_NONE,   &preserve_executability, 0, 0, 0 },
 411   {"times",           't', POPT_ARG_VAL,    &preserve_times, 1, 0, 0 },
 412   {"no-times",         0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 413   {"no-t",             0,  POPT_ARG_VAL,    &preserve_times, 0, 0, 0 },
 414   {"omit-dir-times",  'O', POPT_ARG_VAL,    &omit_dir_times, 2, 0, 0 },
 415   {"modify-window",    0,  POPT_ARG_INT,    &modify_window, OPT_MODIFY_WINDOW, 0, 0 },
 416   {"super",            0,  POPT_ARG_VAL,    &am_root, 2, 0, 0 },
 417   {"no-super",         0,  POPT_ARG_VAL,    &am_root, 0, 0, 0 },
 418   {"owner",           'o', POPT_ARG_VAL,    &preserve_uid, 1, 0, 0 },
 419   {"no-owner",         0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 420   {"no-o",             0,  POPT_ARG_VAL,    &preserve_uid, 0, 0, 0 },
 421   {"group",           'g', POPT_ARG_VAL,    &preserve_gid, 1, 0, 0 },
 422   {"no-group",         0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 423   {"no-g",             0,  POPT_ARG_VAL,    &preserve_gid, 0, 0, 0 },
 424   {0,                 'D', POPT_ARG_NONE,   0, 'D', 0, 0 },
 425   {"no-D",             0,  POPT_ARG_NONE,   0, OPT_NO_D, 0, 0 },
 426   {"devices",          0,  POPT_ARG_VAL,    &preserve_devices, 1, 0, 0 },
 427   {"no-devices",       0,  POPT_ARG_VAL,    &preserve_devices, 0, 0, 0 },
 428   {"specials",         0,  POPT_ARG_VAL,    &preserve_specials, 1, 0, 0 },
 429   {"no-specials",      0,  POPT_ARG_VAL,    &preserve_specials, 0, 0, 0 },
 430   {"links",           'l', POPT_ARG_VAL,    &preserve_links, 1, 0, 0 },
 431   {"no-links",         0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 432   {"no-l",             0,  POPT_ARG_VAL,    &preserve_links, 0, 0, 0 },
 433   {"copy-links",      'L', POPT_ARG_NONE,   &copy_links, 0, 0, 0 },
 434   {"copy-unsafe-links",0,  POPT_ARG_NONE,   &copy_unsafe_links, 0, 0, 0 },
 435   {"safe-links",       0,  POPT_ARG_NONE,   &safe_symlinks, 0, 0, 0 },
 436   {"copy-dirlinks",   'k', POPT_ARG_NONE,   &copy_dirlinks, 0, 0, 0 },
 437   {"keep-dirlinks",   'K', POPT_ARG_NONE,   &keep_dirlinks, 0, 0, 0 },
 438   {"hard-links",      'H', POPT_ARG_VAL,    &preserve_hard_links, 1, 0, 0 },
 439   {"no-hard-links",    0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 440   {"no-H",             0,  POPT_ARG_VAL,    &preserve_hard_links, 0, 0, 0 },
 441   {"relative",        'R', POPT_ARG_VAL,    &relative_paths, 1, 0, 0 },
 442   {"no-relative",      0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 443   {"no-R",             0,  POPT_ARG_VAL,    &relative_paths, 0, 0, 0 },
 444   {"implied-dirs",     0,  POPT_ARG_VAL,    &implied_dirs, 1, 0, 0 },
 445   {"no-implied-dirs",  0,  POPT_ARG_VAL,    &implied_dirs, 0, 0, 0 },
 446   {"chmod",            0,  POPT_ARG_STRING, 0, OPT_CHMOD, 0, 0 },
 447   {"ignore-times",    'I', POPT_ARG_NONE,   &ignore_times, 0, 0, 0 },
 448   {"size-only",        0,  POPT_ARG_NONE,   &size_only, 0, 0, 0 },
 449   {"one-file-system", 'x', POPT_ARG_NONE,   0, 'x', 0, 0 },
 450   {"update",          'u', POPT_ARG_NONE,   &update_only, 0, 0, 0 },
 451   {"existing",         0,  POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 452   {"ignore-non-existing",0,POPT_ARG_NONE,   &ignore_non_existing, 0, 0, 0 },
 453   {"ignore-existing",  0,  POPT_ARG_NONE,   &ignore_existing, 0, 0, 0 },
 454   {"max-size",         0,  POPT_ARG_STRING, &max_size_arg, OPT_MAX_SIZE, 0, 0 },
 455   {"min-size",         0,  POPT_ARG_STRING, &min_size_arg, OPT_MIN_SIZE, 0, 0 },
 456   {"sparse",          'S', POPT_ARG_NONE,   &sparse_files, 0, 0, 0 },
 457   {"inplace",          0,  POPT_ARG_NONE,   &inplace, 0, 0, 0 },
 458   {"append",           0,  POPT_ARG_VAL,    &append_mode, 1, 0, 0 },
 459   {"del",              0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 460   {"delete",           0,  POPT_ARG_NONE,   &delete_mode, 0, 0, 0 },
 461   {"delete-before",    0,  POPT_ARG_VAL,    &delete_before, 2, 0, 0 },
 462   {"delete-during",    0,  POPT_ARG_NONE,   &delete_during, 0, 0, 0 },
 463   {"delete-after",     0,  POPT_ARG_NONE,   &delete_after, 0, 0, 0 },
 464   {"delete-excluded",  0,  POPT_ARG_NONE,   &delete_excluded, 0, 0, 0 },
 465   {"remove-sent-files",0,  POPT_ARG_NONE,   &remove_sent_files, 0, 0, 0 },
 466   {"force",            0,  POPT_ARG_NONE,   &force_delete, 0, 0, 0 },
 467   {"ignore-errors",    0,  POPT_ARG_NONE,   &ignore_errors, 0, 0, 0 },
 468   {"max-delete",       0,  POPT_ARG_INT,    &max_delete, 0, 0, 0 },
 469   {0,                 'F', POPT_ARG_NONE,   0, 'F', 0, 0 },
 470   {"filter",          'f', POPT_ARG_STRING, 0, OPT_FILTER, 0, 0 },
 471   {"exclude",          0,  POPT_ARG_STRING, 0, OPT_EXCLUDE, 0, 0 },
 472   {"include",          0,  POPT_ARG_STRING, 0, OPT_INCLUDE, 0, 0 },
 473   {"exclude-from",     0,  POPT_ARG_STRING, 0, OPT_EXCLUDE_FROM, 0, 0 },
 474   {"include-from",     0,  POPT_ARG_STRING, 0, OPT_INCLUDE_FROM, 0, 0 },
 475   {"cvs-exclude",     'C', POPT_ARG_NONE,   &cvs_exclude, 0, 0, 0 },
 476   {"whole-file",      'W', POPT_ARG_VAL,    &whole_file, 1, 0, 0 },
 477   {"no-whole-file",    0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 478   {"no-W",             0,  POPT_ARG_VAL,    &whole_file, 0, 0, 0 },
 479   {"checksum",        'c', POPT_ARG_NONE,   &always_checksum, 0, 0, 0 },
 480   {"block-size",      'B', POPT_ARG_LONG,   &block_size, 0, 0, 0 },
 481   {"compare-dest",     0,  POPT_ARG_STRING, 0, OPT_COMPARE_DEST, 0, 0 },
 482   {"copy-dest",        0,  POPT_ARG_STRING, 0, OPT_COPY_DEST, 0, 0 },
 483   {"link-dest",        0,  POPT_ARG_STRING, 0, OPT_LINK_DEST, 0, 0 },
 484   {"fuzzy",           'y', POPT_ARG_NONE,   &fuzzy_basis, 0, 0, 0 },
 485   {"compress",        'z', POPT_ARG_NONE,   0, 'z', 0, 0 },
 486   {"compress-level",   0,  POPT_ARG_INT,    &def_compress_level, 'z', 0, 0 },
 487   {0,                 'P', POPT_ARG_NONE,   0, 'P', 0, 0 },
 488   {"progress",         0,  POPT_ARG_VAL,    &do_progress, 1, 0, 0 },
 489   {"no-progress",      0,  POPT_ARG_VAL,    &do_progress, 0, 0, 0 },
 490   {"partial",          0,  POPT_ARG_VAL,    &keep_partial, 1, 0, 0 },
 491   {"no-partial",       0,  POPT_ARG_VAL,    &keep_partial, 0, 0, 0 },
 492   {"partial-dir",      0,  POPT_ARG_STRING, &partial_dir, 0, 0, 0 },
 493   {"delay-updates",    0,  POPT_ARG_NONE,   &delay_updates, 0, 0, 0 },
 494   {"prune-empty-dirs",'m', POPT_ARG_NONE,   &prune_empty_dirs, 0, 0, 0 },
 495   {"log-format",       0,  POPT_ARG_STRING, &log_format, 0, 0, 0 },
 496   {"itemize-changes", 'i', POPT_ARG_NONE,   0, 'i', 0, 0 },
 497   {"bwlimit",          0,  POPT_ARG_INT,    &bwlimit, 0, 0, 0 },
 498   {"backup",          'b', POPT_ARG_NONE,   &make_backups, 0, 0, 0 },
 499   {"backup-dir",       0,  POPT_ARG_STRING, &backup_dir, 0, 0, 0 },
 500   {"suffix",           0,  POPT_ARG_STRING, &backup_suffix, 0, 0, 0 },
 501   {"list-only",        0,  POPT_ARG_VAL,    &list_only, 2, 0, 0 },
 502   {"read-batch",       0,  POPT_ARG_STRING, &batch_name, OPT_READ_BATCH, 0, 0 },
 503   {"write-batch",      0,  POPT_ARG_STRING, &batch_name, OPT_WRITE_BATCH, 0, 0 },
 504   {"only-write-batch", 0,  POPT_ARG_STRING, &batch_name, OPT_ONLY_WRITE_BATCH, 0, 0 },
 505   {"files-from",       0,  POPT_ARG_STRING, &files_from, 0, 0, 0 },
 506   {"from0",           '0', POPT_ARG_NONE,   &eol_nulls, 0, 0, 0},
 507   {"numeric-ids",      0,  POPT_ARG_NONE,   &numeric_ids, 0, 0, 0 },
 508   {"timeout",          0,  POPT_ARG_INT,    &io_timeout, 0, 0, 0 },
 509   {"rsh",             'e', POPT_ARG_STRING, &shell_cmd, 0, 0, 0 },
 510   {"rsync-path",       0,  POPT_ARG_STRING, &rsync_path, 0, 0, 0 },
 511   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 512 #ifdef INET6
 513   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 514   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 515 #endif
 516   {"8-bit-output",    '8', POPT_ARG_NONE,   &allow_8bit_chars, 0, 0, 0 },
 517   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 518   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 519   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 520   {"password-file",    0,  POPT_ARG_STRING, &password_file, 0, 0, 0 },
 521   {"blocking-io",      0,  POPT_ARG_VAL,    &blocking_io, 1, 0, 0 },
 522   {"no-blocking-io",   0,  POPT_ARG_VAL,    &blocking_io, 0, 0, 0 },
 523   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 524   {"checksum-seed",    0,  POPT_ARG_INT,    &checksum_seed, 0, 0, 0 },
 525   {"server",           0,  POPT_ARG_NONE,   0, OPT_SERVER, 0, 0 },
 526   {"sender",           0,  POPT_ARG_NONE,   0, OPT_SENDER, 0, 0 },
 527   /* All the following options switch us into daemon-mode option-parsing. */
 528   {"config",           0,  POPT_ARG_STRING, 0, OPT_DAEMON, 0, 0 },
 529   {"daemon",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 530   {"detach",           0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 531   {"no-detach",        0,  POPT_ARG_NONE,   0, OPT_DAEMON, 0, 0 },
 532   {0,0,0,0, 0, 0, 0}
 533 };
 534
 535 static void daemon_usage(enum logcode F)
 536 {
 537   print_rsync_version(F);
 538
 539   rprintf(F,"\nUsage: rsync --daemon [OPTION]...\n");
 540   rprintf(F,"     --address=ADDRESS       bind to the specified address\n");
 541   rprintf(F,"     --bwlimit=KBPS          limit I/O bandwidth; KBytes per second\n");
 542   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 543   rprintf(F,"     --no-detach             do not detach from the parent\n");
 544   rprintf(F,"     --port=PORT             listen on alternate port number\n");
 545   rprintf(F,"     --sockopts=OPTIONS      specify custom TCP options\n");
 546   rprintf(F," -v, --verbose               increase verbosity\n");
 547 #ifdef INET6
 548   rprintf(F," -4, --ipv4                  prefer IPv4\n");
 549   rprintf(F," -6, --ipv6                  prefer IPv6\n");
 550 #endif
 551   rprintf(F,"     --help                  show this help screen\n");
 552
 553   rprintf(F,"\nIf you were not trying to invoke rsync as a daemon, avoid using any of the\n");
 554   rprintf(F,"daemon-specific rsync options.  See also the rsyncd.conf(5) man page.\n");
 555 }
 556
 557 static struct poptOption long_daemon_options[] = {
 558   /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
 559   {"address",          0,  POPT_ARG_STRING, &bind_address, 0, 0, 0 },
 560   {"bwlimit",          0,  POPT_ARG_INT,    &daemon_bwlimit, 0, 0, 0 },
 561   {"config",           0,  POPT_ARG_STRING, &config_file, 0, 0, 0 },
 562   {"daemon",           0,  POPT_ARG_NONE,   &daemon_opt, 0, 0, 0 },
 563 #ifdef INET6
 564   {"ipv4",            '4', POPT_ARG_VAL,    &default_af_hint, AF_INET, 0, 0 },
 565   {"ipv6",            '6', POPT_ARG_VAL,    &default_af_hint, AF_INET6, 0, 0 },
 566 #endif
 567   {"detach",           0,  POPT_ARG_VAL,    &no_detach, 0, 0, 0 },
 568   {"no-detach",        0,  POPT_ARG_VAL,    &no_detach, 1, 0, 0 },
 569   {"port",             0,  POPT_ARG_INT,    &rsync_port, 0, 0, 0 },
 570   {"sockopts",         0,  POPT_ARG_STRING, &sockopts, 0, 0, 0 },
 571   {"protocol",         0,  POPT_ARG_INT,    &protocol_version, 0, 0, 0 },
 572   {"server",           0,  POPT_ARG_NONE,   &am_server, 0, 0, 0 },
 573   {"temp-dir",        'T', POPT_ARG_STRING, &tmpdir, 0, 0, 0 },
 574   {"verbose",         'v', POPT_ARG_NONE,   0, 'v', 0, 0 },
 575   {"no-verbose",       0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 576   {"no-v",             0,  POPT_ARG_VAL,    &verbose, 0, 0, 0 },
 577   {"help",            'h', POPT_ARG_NONE,   0, 'h', 0, 0 },
 578   {0,0,0,0, 0, 0, 0}
 579 };
 580
 581
 582 static char err_buf[200];
 583
 584
 585 /**
 586  * Store the option error message, if any, so that we can log the
 587  * connection attempt (which requires parsing the options), and then
 588  * show the error later on.
 589  **/
 590 void option_error(void)
 591 {
 592         if (!err_buf[0]) {
 593                 strcpy(err_buf, "Error parsing options: "
 594                     "option may be supported on client but not on server?\n");
 595         }
 596
 597         rprintf(FERROR, RSYNC_NAME ": %s", err_buf);
 598         msleep(20);
 599 }
 600
 601
 602 /**
 603  * Tweak the option table to disable all options that the rsyncd.conf
 604  * file has told us to refuse.
 605  **/
 606 static void set_refuse_options(char *bp)
 607 {
 608         struct poptOption *op;
 609         char *cp, shortname[2];
 610         int is_wild, found_match;
 611
 612         shortname[1] = '\0';
 613
 614         while (1) {
 615                 while (*bp == ' ') bp++;
 616                 if (!*bp)
 617                         break;
 618                 if ((cp = strchr(bp, ' ')) != NULL)
 619                         *cp= '\0';
 620                 is_wild = strpbrk(bp, "*?[") != NULL;
 621                 found_match = 0;
 622                 for (op = long_options; ; op++) {
 623                         *shortname = op->shortName;
 624                         if (!op->longName && !*shortname)
 625                                 break;
 626                         if ((op->longName && wildmatch(bp, op->longName))
 627                             || (*shortname && wildmatch(bp, shortname))) {
 628                                 if (op->argInfo == POPT_ARG_VAL)
 629                                         op->argInfo = POPT_ARG_NONE;
 630                                 op->val = (op - long_options) + OPT_REFUSED_BASE;
 631                                 found_match = 1;
 632                                 /* These flags are set to let us easily check
 633                                  * an implied option later in the code. */
 634                                 switch (*shortname) {
 635                                 case 'r': case 'd': case 'l': case 'p':
 636                                 case 't': case 'g': case 'o': case 'D':
 637                                         refused_archive_part = op->val;
 638                                         break;
 639                                 case 'z':
 640                                         refused_compress = op->val;
 641                                         break;
 642                                 case '\0':
 643                                         if (wildmatch("delete", op->longName))
 644                                                 refused_delete = op->val;
 645                                         else if (wildmatch("delete-before", op->longName))
 646                                                 refused_delete_before = op->val;
 647                                         else if (wildmatch("partial", op->longName))
 648                                                 refused_partial = op->val;
 649                                         else if (wildmatch("progress", op->longName))
 650                                                 refused_progress = op->val;
 651                                         else if (wildmatch("inplace", op->longName))
 652                                                 refused_inplace = op->val;
 653                                         break;
 654                                 }
 655                                 if (!is_wild)
 656                                         break;
 657                         }
 658                 }
 659                 if (!found_match) {
 660                         rprintf(FLOG, "No match for refuse-options string \"%s\"\n",
 661                                 bp);
 662                 }
 663                 if (!cp)
 664                         break;
 665                 *cp = ' ';
 666                 bp = cp + 1;
 667         }
 668
 669         for (op = long_options; ; op++) {
 670                 *shortname = op->shortName;
 671                 if (!op->longName && !*shortname)
 672                         break;
 673                 if (op->val == OPT_DAEMON) {
 674                         if (op->argInfo == POPT_ARG_VAL)
 675                                 op->argInfo = POPT_ARG_NONE;
 676                         op->val = (op - long_options) + OPT_REFUSED_BASE;
 677                 }
 678         }
 679 }
 680
 681
 682 static int count_args(const char **argv)
 683 {
 684         int i = 0;
 685
 686         if (argv) {
 687                 while (argv[i] != NULL)
 688                         i++;
 689         }
 690
 691         return i;
 692 }
 693
 694
 695 static OFF_T parse_size_arg(char **size_arg, char def_suf)
 696 {
 697         int reps, mult, make_compatible = 0;
 698         const char *arg;
 699         OFF_T size = 1;
 700
 701         for (arg = *size_arg; isdigit(*(uchar*)arg); arg++) {}
 702         if (*arg == '.')
 703                 for (arg++; isdigit(*(uchar*)arg); arg++) {}
 704         switch (*arg && *arg != '+' && *arg != '-' ? *arg++ : def_suf) {
 705         case 'b': case 'B':
 706                 reps = 0;
 707                 break;
 708         case 'k': case 'K':
 709                 reps = 1;
 710                 break;
 711         case 'm': case 'M':
 712                 reps = 2;
 713                 break;
 714         case 'g': case 'G':
 715                 reps = 3;
 716                 break;
 717         default:
 718                 return -1;
 719         }
 720         if (*arg == 'b' || *arg == 'B')
 721                 mult = 1000, make_compatible = 1, arg++;
 722         else if (!*arg || *arg == '+' || *arg == '-')
 723                 mult = 1024;
 724         else if (strncasecmp(arg, "ib", 2) == 0)
 725                 mult = 1024, arg += 2;
 726         else
 727                 return -1;
 728         while (reps--)
 729                 size *= mult;
 730         size *= atof(*size_arg);
 731         if ((*arg == '+' || *arg == '-') && arg[1] == '1')
 732                 size += atoi(arg), make_compatible = 1, arg += 2;
 733         if (*arg)
 734                 return -1;
 735         if (size > 0 && make_compatible) {
 736                 /* We convert this manually because we may need %lld precision,
 737                  * and that's not a portable sprintf() escape. */
 738                 char buf[128], *s = buf + sizeof buf - 1;
 739                 OFF_T num = size;
 740                 *s = '\0';
 741                 while (num) {
 742                         *--s = (num % 10) + '0';
 743                         num /= 10;
 744                 }
 745                 if (!(*size_arg = strdup(s)))
 746                         out_of_memory("parse_size_arg");
 747         }
 748         return size;
 749 }
 750
 751
 752 static void create_refuse_error(int which)
 753 {
 754         /* The "which" value is the index + OPT_REFUSED_BASE. */
 755         struct poptOption *op = &long_options[which - OPT_REFUSED_BASE];
 756         int n = snprintf(err_buf, sizeof err_buf,
 757                          "The server is configured to refuse --%s\n",
 758                          op->longName) - 1;
 759         if (op->shortName) {
 760                 snprintf(err_buf + n, sizeof err_buf - n,
 761                          " (-%c)\n", op->shortName);
 762         }
 763 }
 764
 765
 766 /**
 767  * Process command line arguments.  Called on both local and remote.
 768  *
 769  * @retval 1 if all options are OK; with globals set to appropriate
 770  * values
 771  *
 772  * @retval 0 on error, with err_buf containing an explanation
 773  **/
 774 int parse_arguments(int *argc, const char ***argv, int frommain)
 775 {
 776         int opt;
 777         char *ref = lp_refuse_options(module_id);
 778         const char *arg;
 779         poptContext pc;
 780
 781         if (ref && *ref)
 782                 set_refuse_options(ref);
 783
 784         /* TODO: Call poptReadDefaultConfig; handle errors. */
 785
 786         /* The context leaks in case of an error, but if there's a
 787          * problem we always exit anyhow. */
 788         pc = poptGetContext(RSYNC_NAME, *argc, *argv, long_options, 0);
 789         poptReadDefaultConfig(pc, 0);
 790
 791         while ((opt = poptGetNextOpt(pc)) != -1) {
 792                 /* most options are handled automatically by popt;
 793                  * only special cases are returned and listed here. */
 794
 795                 switch (opt) {
 796                 case OPT_VERSION:
 797                         print_rsync_version(FINFO);
 798                         exit_cleanup(0);
 799
 800                 case OPT_SERVER:
 801                         if (!am_server) {
 802                                 /* Disable popt aliases on the server side and
 803                                  * then start parsing the options again. */
 804                                 poptFreeContext(pc);
 805                                 pc = poptGetContext(RSYNC_NAME, *argc, *argv,
 806                                                     long_options, 0);
 807                                 am_server = 1;
 808                         }
 809                         break;
 810
 811                 case OPT_SENDER:
 812                         if (!am_server) {
 813                                 usage(FERROR);
 814                                 exit_cleanup(RERR_SYNTAX);
 815                         }
 816                         am_sender = 1;
 817                         break;
 818
 819                 case OPT_DAEMON:
 820                         if (am_daemon) {
 821                                 strcpy(err_buf, "Attempt to hack rsync thwarted!\n");
 822                                 return 0;
 823                         }
 824                         poptFreeContext(pc);
 825                         pc = poptGetContext(RSYNC_NAME, *argc, *argv,
 826                                             long_daemon_options, 0);
 827                         while ((opt = poptGetNextOpt(pc)) != -1) {
 828                                 switch (opt) {
 829                                 case 'h':
 830                                         daemon_usage(FINFO);
 831                                         exit_cleanup(0);
 832
 833                                 case 'v':
 834                                         verbose++;
 835                                         break;
 836
 837                                 default:
 838                                         rprintf(FERROR,
 839                                             "rsync: %s: %s (in daemon mode)\n",
 840                                             poptBadOption(pc, POPT_BADOPTION_NOALIAS),
 841                                             poptStrerror(opt));
 842                                         goto daemon_error;
 843                                 }
 844                         }
 845
 846                         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
 847                                 snprintf(err_buf, sizeof err_buf,
 848                                          "the --temp-dir path is WAY too long.\n");
 849                                 return 0;
 850                         }
 851
 852                         if (!daemon_opt) {
 853                                 rprintf(FERROR, "Daemon option(s) used without --daemon.\n");
 854                             daemon_error:
 855                                 rprintf(FERROR,
 856                                     "(Type \"rsync --daemon --help\" for assistance with daemon mode.)\n");
 857                                 exit_cleanup(RERR_SYNTAX);
 858                         }
 859
 860                         *argv = poptGetArgs(pc);
 861                         *argc = count_args(*argv);
 862                         am_starting_up = 0;
 863                         daemon_opt = 0;
 864                         am_daemon = 1;
 865                         return 1;
 866
 867                 case OPT_MODIFY_WINDOW:
 868                         /* The value has already been set by popt, but
 869                          * we need to remember that we're using a
 870                          * non-default setting. */
 871                         modify_window_set = 1;
 872                         break;
 873
 874                 case OPT_FILTER:
 875                         parse_rule(&filter_list, poptGetOptArg(pc), 0, 0);
 876                         break;
 877
 878                 case OPT_EXCLUDE:
 879                         parse_rule(&filter_list, poptGetOptArg(pc),
 880                                    0, XFLG_OLD_PREFIXES);
 881                         break;
 882
 883                 case OPT_INCLUDE:
 884                         parse_rule(&filter_list, poptGetOptArg(pc),
 885                                    MATCHFLG_INCLUDE, XFLG_OLD_PREFIXES);
 886                         break;
 887
 888                 case OPT_EXCLUDE_FROM:
 889                 case OPT_INCLUDE_FROM:
 890                         arg = poptGetOptArg(pc);
 891                         if (sanitize_paths)
 892                                 arg = sanitize_path(NULL, arg, NULL, 0);
 893                         if (server_filter_list.head) {
 894                                 char *cp = (char *)arg;
 895                                 if (!*cp)
 896                                         goto options_rejected;
 897                                 clean_fname(cp, 1);
 898                                 if (check_filter(&server_filter_list, cp, 0) < 0)
 899                                         goto options_rejected;
 900                         }
 901                         parse_filter_file(&filter_list, arg,
 902                                 opt == OPT_INCLUDE_FROM ? MATCHFLG_INCLUDE : 0,
 903                                 XFLG_FATAL_ERRORS | XFLG_OLD_PREFIXES);
 904                         break;
 905
 906                 case 'a':
 907                         if (refused_archive_part) {
 908                                 create_refuse_error(refused_archive_part);
 909                                 return 0;
 910                         }
 911                         if (!recurse) /* preserve recurse == 2 */
 912                                 recurse = 1;
 913 #ifdef SUPPORT_LINKS
 914                         preserve_links = 1;
 915 #endif
 916                         preserve_perms = 1;
 917                         preserve_times = 1;
 918                         preserve_gid = 1;
 919                         preserve_uid = 1;
 920                         preserve_devices = 1;
 921                         preserve_specials = 1;
 922                         break;
 923
 924                 case 'D':
 925                         preserve_devices = preserve_specials = 1;
 926                         break;
 927
 928                 case OPT_NO_D:
 929                         preserve_devices = preserve_specials = 0;
 930                         break;
 931
 932                 case 'h':
 933                         human_readable++;
 934                         break;
 935
 936                 case 'i':
 937                         itemize_changes++;
 938                         break;
 939
 940                 case 'v':
 941                         verbose++;
 942                         break;
 943
 944                 case 'q':
 945                         if (frommain)
 946                                 quiet++;
 947                         break;
 948
 949                 case 'x':
 950                         one_file_system++;
 951                         break;
 952
 953                 case 'F':
 954                         switch (++F_option_cnt) {
 955                         case 1:
 956                                 parse_rule(&filter_list,": /.rsync-filter",0,0);
 957                                 break;
 958                         case 2:
 959                                 parse_rule(&filter_list,"- .rsync-filter",0,0);
 960                                 break;
 961                         }
 962                         break;
 963
 964                 case 'P':
 965                         if (refused_partial || refused_progress) {
 966                                 create_refuse_error(refused_partial
 967                                     ? refused_partial : refused_progress);
 968                                 return 0;
 969                         }
 970                         do_progress = 1;
 971                         keep_partial = 1;
 972                         break;
 973
 974                 case 'z':
 975                         if (def_compress_level < Z_DEFAULT_COMPRESSION
 976                          || def_compress_level > Z_BEST_COMPRESSION) {
 977                                 snprintf(err_buf, sizeof err_buf,
 978                                         "--compress-level value is invalid: %d\n",
 979                                         def_compress_level);
 980                                 return 0;
 981                         }
 982                         do_compression = def_compress_level != Z_NO_COMPRESSION;
 983                         if (do_compression && refused_compress) {
 984                                 create_refuse_error(refused_compress);
 985                                 return 0;
 986                         }
 987                         break;
 988
 989                 case OPT_WRITE_BATCH:
 990                         /* batch_name is already set */
 991                         write_batch = 1;
 992                         break;
 993
 994                 case OPT_ONLY_WRITE_BATCH:
 995                         /* batch_name is already set */
 996                         write_batch = -1;
 997                         break;
 998
 999                 case OPT_READ_BATCH:
1000                         /* batch_name is already set */
1001                         read_batch = 1;
1002                         break;
1003
1004                 case OPT_MAX_SIZE:
1005                         if ((max_size = parse_size_arg(&max_size_arg, 'b')) <= 0) {
1006                                 snprintf(err_buf, sizeof err_buf,
1007                                         "--max-size value is invalid: %s\n",
1008                                         max_size_arg);
1009                                 return 0;
1010                         }
1011                         break;
1012
1013                 case OPT_MIN_SIZE:
1014                         if ((min_size = parse_size_arg(&min_size_arg, 'b')) <= 0) {
1015                                 snprintf(err_buf, sizeof err_buf,
1016                                         "--min-size value is invalid: %s\n",
1017                                         min_size_arg);
1018                                 return 0;
1019                         }
1020                         break;
1021
1022                 case OPT_LINK_DEST:
1023 #ifdef HAVE_LINK
1024                         link_dest = 1;
1025                         dest_option = "--link-dest";
1026                         goto set_dest_dir;
1027 #else
1028                         snprintf(err_buf, sizeof err_buf,
1029                                  "hard links are not supported on this %s\n",
1030                                  am_server ? "server" : "client");
1031                         return 0;
1032 #endif
1033
1034                 case OPT_COPY_DEST:
1035                         copy_dest = 1;
1036                         dest_option = "--copy-dest";
1037                         goto set_dest_dir;
1038
1039                 case OPT_COMPARE_DEST:
1040                         compare_dest = 1;
1041                         dest_option = "--compare-dest";
1042                 set_dest_dir:
1043                         if (basis_dir_cnt >= MAX_BASIS_DIRS) {
1044                                 snprintf(err_buf, sizeof err_buf,
1045                                         "ERROR: at most %d %s args may be specified\n",
1046                                         MAX_BASIS_DIRS, dest_option);
1047                                 return 0;
1048                         }
1049                         arg = poptGetOptArg(pc);
1050                         if (sanitize_paths)
1051                                 arg = sanitize_path(NULL, arg, NULL, 0);
1052                         basis_dir[basis_dir_cnt++] = (char *)arg;
1053                         break;
1054
1055                 case OPT_CHMOD:
1056                         arg = poptGetOptArg(pc);
1057                         if (!parse_chmod(arg, &chmod_modes)) {
1058                                 snprintf(err_buf, sizeof err_buf,
1059                                     "Invalid argument passed to --chmod (%s)\n",
1060                                     arg);
1061                                 return 0;
1062                         }
1063                         break;
1064
1065                 case OPT_HELP:
1066                         usage(FINFO);
1067                         exit_cleanup(0);
1068
1069                 default:
1070                         /* A large opt value means that set_refuse_options()
1071                          * turned this option off. */
1072                         if (opt >= OPT_REFUSED_BASE) {
1073                                 create_refuse_error(opt);
1074                                 return 0;
1075                         }
1076                         snprintf(err_buf, sizeof err_buf, "%s%s: %s\n",
1077                                  am_server ? "on remote machine: " : "",
1078                                  poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1079                                  poptStrerror(opt));
1080                         return 0;
1081                 }
1082         }
1083
1084         if (human_readable && *argc == 2) {
1085                 /* Allow the old meaning of 'h' (--help) on its own. */
1086                 usage(FINFO);
1087                 exit_cleanup(0);
1088         }
1089
1090 #ifndef SUPPORT_LINKS
1091         if (preserve_links && !am_sender) {
1092                 snprintf(err_buf, sizeof err_buf,
1093                          "symlinks are not supported on this %s\n",
1094                          am_server ? "server" : "client");
1095                 return 0;
1096         }
1097 #endif
1098
1099 #ifndef SUPPORT_HARD_LINKS
1100         if (preserve_hard_links) {
1101                 snprintf(err_buf, sizeof err_buf,
1102                          "hard links are not supported on this %s\n",
1103                          am_server ? "server" : "client");
1104                 return 0;
1105         }
1106 #endif
1107
1108         if (write_batch && read_batch) {
1109                 snprintf(err_buf, sizeof err_buf,
1110                         "--write-batch and --read-batch can not be used together\n");
1111                 return 0;
1112         }
1113         if (write_batch > 0 || read_batch) {
1114                 if (am_server) {
1115                         rprintf(FINFO,
1116                                 "ignoring --%s-batch option sent to server\n",
1117                                 write_batch ? "write" : "read");
1118                         /* We don't actually exit_cleanup(), so that we can
1119                          * still service older version clients that still send
1120                          * batch args to server. */
1121                         read_batch = write_batch = 0;
1122                         batch_name = NULL;
1123                 } else if (dry_run)
1124                         write_batch = 0;
1125         }
1126         if (read_batch && files_from) {
1127                 snprintf(err_buf, sizeof err_buf,
1128                         "--read-batch cannot be used with --files-from\n");
1129                 return 0;
1130         }
1131         if (batch_name && strlen(batch_name) > MAX_BATCH_NAME_LEN) {
1132                 snprintf(err_buf, sizeof err_buf,
1133                         "the batch-file name must be %d characters or less.\n",
1134                         MAX_BATCH_NAME_LEN);
1135                 return 0;
1136         }
1137
1138         if (tmpdir && strlen(tmpdir) >= MAXPATHLEN - 10) {
1139                 snprintf(err_buf, sizeof err_buf,
1140                          "the --temp-dir path is WAY too long.\n");
1141                 return 0;
1142         }
1143
1144         if (compare_dest + copy_dest + link_dest > 1) {
1145                 snprintf(err_buf, sizeof err_buf,
1146                         "You may not mix --compare-dest, --copy-dest, and --link-dest.\n");
1147                 return 0;
1148         }
1149
1150         if (files_from) {
1151                 if (recurse == 1) /* preserve recurse == 2 */
1152                         recurse = 0;
1153                 if (xfer_dirs < 0)
1154                         xfer_dirs = 1;
1155         }
1156
1157         if (xfer_dirs < 1)
1158                 xfer_dirs = recurse || list_only;
1159
1160         if (relative_paths < 0)
1161                 relative_paths = files_from? 1 : 0;
1162         if (!relative_paths)
1163                 implied_dirs = 0;
1164
1165         if (!!delete_before + delete_during + delete_after > 1) {
1166                 snprintf(err_buf, sizeof err_buf,
1167                         "You may not combine multiple --delete-WHEN options.\n");
1168                 return 0;
1169         }
1170         if (delete_before || delete_during || delete_after)
1171                 delete_mode = 1;
1172         else if (delete_mode || delete_excluded) {
1173                 if (refused_delete_before) {
1174                         create_refuse_error(refused_delete_before);
1175                         return 0;
1176                 }
1177                 delete_mode = delete_before = 1;
1178         }
1179         if (!xfer_dirs && delete_mode) {
1180                 snprintf(err_buf, sizeof err_buf,
1181                         "--delete does not work without -r or -d.\n");
1182                 return 0;
1183         }
1184
1185         if (delete_mode && refused_delete) {
1186                 create_refuse_error(refused_delete);
1187                 return 0;
1188         }
1189
1190         if (remove_sent_files) {
1191                 /* We only want to infer this refusal of --remove-sent-files
1192                  * via the refusal of "delete", not any of the "delete-FOO"
1193                  * options. */
1194                 if (refused_delete && am_sender) {
1195                         create_refuse_error(refused_delete);
1196                         return 0;
1197                 }
1198                 need_messages_from_generator = 1;
1199         }
1200
1201         *argv = poptGetArgs(pc);
1202         *argc = count_args(*argv);
1203
1204         if (sanitize_paths) {
1205                 int i;
1206                 for (i = *argc; i-- > 0; )
1207                         (*argv)[i] = sanitize_path(NULL, (*argv)[i], "", 0);
1208                 if (tmpdir)
1209                         tmpdir = sanitize_path(NULL, tmpdir, NULL, 0);
1210                 if (partial_dir)
1211                         partial_dir = sanitize_path(NULL, partial_dir, NULL, 0);
1212                 if (backup_dir)
1213                         backup_dir = sanitize_path(NULL, backup_dir, NULL, 0);
1214         }
1215         if (server_filter_list.head && !am_sender) {
1216                 struct filter_list_struct *elp = &server_filter_list;
1217                 int i;
1218                 if (tmpdir) {
1219                         if (!*tmpdir)
1220                                 goto options_rejected;
1221                         clean_fname(tmpdir, 1);
1222                         if (check_filter(elp, tmpdir, 1) < 0)
1223                                 goto options_rejected;
1224                 }
1225                 if (partial_dir && *partial_dir) {
1226                         clean_fname(partial_dir, 1);
1227                         if (check_filter(elp, partial_dir, 1) < 0)
1228                                 goto options_rejected;
1229                 }
1230                 for (i = 0; i < basis_dir_cnt; i++) {
1231                         if (!*basis_dir[i])
1232                                 goto options_rejected;
1233                         clean_fname(basis_dir[i], 1);
1234                         if (check_filter(elp, basis_dir[i], 1) < 0)
1235                                 goto options_rejected;
1236                 }
1237                 if (backup_dir) {
1238                         if (!*backup_dir)
1239                                 goto options_rejected;
1240                         clean_fname(backup_dir, 1);
1241                         if (check_filter(elp, backup_dir, 1) < 0) {
1242                             options_rejected:
1243                                 snprintf(err_buf, sizeof err_buf,
1244                                     "Your options have been rejected by the server.\n");
1245                                 return 0;
1246                         }
1247                 }
1248         }
1249
1250         if (!backup_suffix)
1251                 backup_suffix = backup_dir ? "" : BACKUP_SUFFIX;
1252         backup_suffix_len = strlen(backup_suffix);
1253         if (strchr(backup_suffix, '/') != NULL) {
1254                 snprintf(err_buf, sizeof err_buf,
1255                         "--suffix cannot contain slashes: %s\n",
1256                         backup_suffix);
1257                 return 0;
1258         }
1259         if (backup_dir) {
1260                 backup_dir_len = strlcpy(backup_dir_buf, backup_dir, sizeof backup_dir_buf);
1261                 backup_dir_remainder = sizeof backup_dir_buf - backup_dir_len;
1262                 if (backup_dir_remainder < 32) {
1263                         snprintf(err_buf, sizeof err_buf,
1264                                 "the --backup-dir path is WAY too long.\n");
1265                         return 0;
1266                 }
1267                 if (backup_dir_buf[backup_dir_len - 1] != '/') {
1268                         backup_dir_buf[backup_dir_len++] = '/';
1269                         backup_dir_buf[backup_dir_len] = '\0';
1270                 }
1271                 if (verbose > 1 && !am_sender)
1272                         rprintf(FINFO, "backup_dir is %s\n", backup_dir_buf);
1273         } else if (!backup_suffix_len && (!am_server || !am_sender)) {
1274                 snprintf(err_buf, sizeof err_buf,
1275                         "--suffix cannot be a null string without --backup-dir\n");
1276                 return 0;
1277         } else if (make_backups && delete_mode && !delete_excluded) {
1278                 snprintf(backup_dir_buf, sizeof backup_dir_buf,
1279                         "P *%s", backup_suffix);
1280                 parse_rule(&filter_list, backup_dir_buf, 0, 0);
1281         }
1282         if (make_backups && !backup_dir)
1283                 omit_dir_times = 1;
1284
1285         if (log_format) {
1286                 if (am_server && log_format_has(log_format, 'I'))
1287                         log_format_has_i = 2;
1288                 else if (log_format_has(log_format, 'i'))
1289                         log_format_has_i = itemize_changes | 1;
1290                 if (!log_format_has(log_format, 'b')
1291                  && !log_format_has(log_format, 'c'))
1292                         log_before_transfer = !am_server;
1293         } else if (itemize_changes) {
1294                 log_format = "%i %n%L";
1295                 log_format_has_i = itemize_changes;
1296                 log_before_transfer = !am_server;
1297         }
1298
1299         if (do_progress && !verbose && !log_before_transfer && !am_server)
1300                 verbose = 1;
1301
1302         if (dry_run)
1303                 do_xfers = 0;
1304
1305         set_io_timeout(io_timeout);
1306
1307         if (verbose && !log_format) {
1308                 log_format = "%n%L";
1309                 log_before_transfer = !am_server;
1310         }
1311         if (log_format_has_i || log_format_has(log_format, 'o'))
1312                 log_format_has_o_or_i = 1;
1313
1314         if (daemon_bwlimit && (!bwlimit || bwlimit > daemon_bwlimit))
1315                 bwlimit = daemon_bwlimit;
1316         if (bwlimit) {
1317                 bwlimit_writemax = (size_t)bwlimit * 128;
1318                 if (bwlimit_writemax < 512)
1319                         bwlimit_writemax = 512;
1320         }
1321
1322         if (sparse_files && inplace) {
1323                 /* Note: we don't check for this below, because --append is
1324                  * OK with --sparse (as long as redos are handled right). */
1325                 snprintf(err_buf, sizeof err_buf,
1326                          "--sparse cannot be used with --inplace\n");
1327                 return 0;
1328         }
1329
1330         if (append_mode) {
1331                 if (whole_file > 0) {
1332                         snprintf(err_buf, sizeof err_buf,
1333                                  "--append cannot be used with --whole-file\n");
1334                         return 0;
1335                 }
1336                 if (refused_inplace) {
1337                         create_refuse_error(refused_inplace);
1338                         return 0;
1339                 }
1340                 inplace = 1;
1341         }
1342
1343         if (delay_updates && !partial_dir)
1344                 partial_dir = tmp_partialdir;
1345
1346         if (inplace) {
1347 #ifdef HAVE_FTRUNCATE
1348                 if (partial_dir) {
1349                         snprintf(err_buf, sizeof err_buf,
1350                                  "--%s cannot be used with --%s\n",
1351                                  append_mode ? "append" : "inplace",
1352                                  delay_updates ? "delay-updates" : "partial-dir");
1353                         return 0;
1354                 }
1355                 /* --inplace implies --partial for refusal purposes, but we
1356                  * clear the keep_partial flag for internal logic purposes. */
1357                 if (refused_partial) {
1358                         create_refuse_error(refused_partial);
1359                         return 0;
1360                 }
1361                 keep_partial = 0;
1362 #else
1363                 snprintf(err_buf, sizeof err_buf,
1364                          "--%s is not supported on this %s\n",
1365                          append_mode ? "append" : "inplace",
1366                          am_server ? "server" : "client");
1367                 return 0;
1368 #endif
1369         } else {
1370                 if (keep_partial && !partial_dir && !am_server) {
1371                         if ((arg = getenv("RSYNC_PARTIAL_DIR")) != NULL && *arg)
1372                                 partial_dir = strdup(arg);
1373                 }
1374                 if (partial_dir) {
1375                         if (*partial_dir)
1376                                 clean_fname(partial_dir, 1);
1377                         if (!*partial_dir || strcmp(partial_dir, ".") == 0)
1378                                 partial_dir = NULL;
1379                         else if (*partial_dir != '/') {
1380                                 parse_rule(&filter_list, partial_dir,
1381                                     MATCHFLG_NO_PREFIXES|MATCHFLG_DIRECTORY, 0);
1382                         }
1383                         if (!partial_dir && refused_partial) {
1384                                 create_refuse_error(refused_partial);
1385                                 return 0;
1386                         }
1387                         keep_partial = 1;
1388                 }
1389         }
1390
1391         if (files_from) {
1392                 char *h, *p;
1393                 int q;
1394                 if (*argc > 2 || (!am_daemon && *argc == 1)) {
1395                         usage(FERROR);
1396                         exit_cleanup(RERR_SYNTAX);
1397                 }
1398                 if (strcmp(files_from, "-") == 0) {
1399                         filesfrom_fd = 0;
1400                         if (am_server)
1401                                 filesfrom_host = ""; /* reading from socket */
1402                 } else if ((p = check_for_hostspec(files_from, &h, &q)) != 0) {
1403                         if (am_server) {
1404                                 snprintf(err_buf, sizeof err_buf,
1405                                         "The --files-from sent to the server cannot specify a host.\n");
1406                                 return 0;
1407                         }
1408                         files_from = p;
1409                         filesfrom_host = h;
1410                         if (strcmp(files_from, "-") == 0) {
1411                                 snprintf(err_buf, sizeof err_buf,
1412                                         "Invalid --files-from remote filename\n");
1413                                 return 0;
1414                         }
1415                 } else {
1416                         if (sanitize_paths)
1417                                 files_from = sanitize_path(NULL, files_from, NULL, 0);
1418                         if (server_filter_list.head) {
1419                                 if (!*files_from)
1420                                         goto options_rejected;
1421                                 clean_fname(files_from, 1);
1422                                 if (check_filter(&server_filter_list, files_from, 0) < 0)
1423                                         goto options_rejected;
1424                         }
1425                         filesfrom_fd = open(files_from, O_RDONLY|O_BINARY);
1426                         if (filesfrom_fd < 0) {
1427                                 snprintf(err_buf, sizeof err_buf,
1428                                         "failed to open files-from file %s: %s\n",
1429                                         files_from, strerror(errno));
1430                                 return 0;
1431                         }
1432                 }
1433         }
1434
1435         am_starting_up = 0;
1436
1437         return 1;
1438 }
1439
1440
1441 /**
1442  * Construct a filtered list of options to pass through from the
1443  * client to the server.
1444  *
1445  * This involves setting options that will tell the server how to
1446  * behave, and also filtering out options that are processed only
1447  * locally.
1448  **/
1449 void server_options(char **args,int *argc)
1450 {
1451         static char argstr[64];
1452         int ac = *argc;
1453         char *arg;
1454
1455         int i, x;
1456
1457         if (blocking_io == -1)
1458                 blocking_io = 0;
1459
1460         /* This should always remain first on the server's command-line. */
1461         args[ac++] = "--server";
1462
1463         if (daemon_over_rsh) {
1464                 args[ac++] = "--daemon";
1465                 *argc = ac;
1466                 /* if we're passing --daemon, we're done */
1467                 return;
1468         }
1469
1470         if (!am_sender)
1471                 args[ac++] = "--sender";
1472
1473         x = 1;
1474         argstr[0] = '-';
1475         for (i = 0; i < verbose; i++)
1476                 argstr[x++] = 'v';
1477
1478         /* the -q option is intentionally left out */
1479         if (make_backups)
1480                 argstr[x++] = 'b';
1481         if (update_only)
1482                 argstr[x++] = 'u';
1483         if (!do_xfers) /* Note: NOT "dry_run"! */
1484                 argstr[x++] = 'n';
1485         if (preserve_links)
1486                 argstr[x++] = 'l';
1487         if (xfer_dirs > (recurse || !delete_mode || !am_sender))
1488                 argstr[x++] = 'd';
1489         if (am_sender) {
1490                 if (keep_dirlinks)
1491                         argstr[x++] = 'K';
1492                 if (prune_empty_dirs)
1493                         argstr[x++] = 'm';
1494                 if (omit_dir_times == 2)
1495                         argstr[x++] = 'O';
1496         } else {
1497                 if (copy_links)
1498                         argstr[x++] = 'L';
1499                 if (copy_dirlinks)
1500                         argstr[x++] = 'k';
1501         }
1502
1503         if (whole_file > 0)
1504                 argstr[x++] = 'W';
1505         /* We don't need to send --no-whole-file, because it's the
1506          * default for remote transfers, and in any case old versions
1507          * of rsync will not understand it. */
1508
1509         if (preserve_hard_links)
1510                 argstr[x++] = 'H';
1511         if (preserve_uid)
1512                 argstr[x++] = 'o';
1513         if (preserve_gid)
1514                 argstr[x++] = 'g';
1515         if (preserve_devices) /* ignore preserve_specials here */
1516                 argstr[x++] = 'D';
1517         if (preserve_times)
1518                 argstr[x++] = 't';
1519         if (preserve_perms)
1520                 argstr[x++] = 'p';
1521         else if (preserve_executability && am_sender)
1522                 argstr[x++] = 'E';
1523         if (recurse)
1524                 argstr[x++] = 'r';
1525         if (always_checksum)
1526                 argstr[x++] = 'c';
1527         if (cvs_exclude)
1528                 argstr[x++] = 'C';
1529         if (ignore_times)
1530                 argstr[x++] = 'I';
1531         if (relative_paths)
1532                 argstr[x++] = 'R';
1533         if (one_file_system) {
1534                 argstr[x++] = 'x';
1535                 if (one_file_system > 1)
1536                         argstr[x++] = 'x';
1537         }
1538         if (sparse_files)
1539                 argstr[x++] = 'S';
1540         if (do_compression)
1541                 argstr[x++] = 'z';
1542
1543         /* This is a complete hack - blame Rusty.  FIXME!
1544          * This hack is only needed for older rsync versions that
1545          * don't understand the --list-only option. */
1546         if (list_only == 1 && !recurse)
1547                 argstr[x++] = 'r';
1548
1549         argstr[x] = '\0';
1550
1551         if (x != 1)
1552                 args[ac++] = argstr;
1553
1554         if (list_only > 1)
1555                 args[ac++] = "--list-only";
1556
1557         /* This makes sure that the remote rsync can handle deleting with -d
1558          * sans -r because the --no-r option was added at the same time. */
1559         if (xfer_dirs && !recurse && delete_mode && am_sender)
1560                 args[ac++] = "--no-r";
1561
1562         if (do_compression && def_compress_level != Z_DEFAULT_COMPRESSION) {
1563                 if (asprintf(&arg, "--compress-level=%d", def_compress_level) < 0)
1564                         goto oom;
1565                 args[ac++] = arg;
1566         }
1567
1568         if (preserve_devices) {
1569                 /* Note: sending "--devices" would not be backward-compatible. */
1570                 if (!preserve_specials)
1571                         args[ac++] = "--no-specials"; /* -D is already set. */
1572         } else if (preserve_specials)
1573                 args[ac++] = "--specials";
1574
1575         /* The server side doesn't use our log-format, but in certain
1576          * circumstances they need to know a little about the option. */
1577         if (log_format && am_sender) {
1578                 if (log_format_has_i > 1)
1579                         args[ac++] = "--log-format=%i%I";
1580                 else if (log_format_has_i)
1581                         args[ac++] = "--log-format=%i";
1582                 else if (log_format_has_o_or_i)
1583                         args[ac++] = "--log-format=%o";
1584                 else if (!verbose)
1585                         args[ac++] = "--log-format=X";
1586         }
1587
1588         if (block_size) {
1589                 if (asprintf(&arg, "-B%lu", block_size) < 0)
1590                         goto oom;
1591                 args[ac++] = arg;
1592         }
1593
1594         if (max_delete && am_sender) {
1595                 if (asprintf(&arg, "--max-delete=%d", max_delete) < 0)
1596                         goto oom;
1597                 args[ac++] = arg;
1598         }
1599
1600         if (min_size && am_sender) {
1601                 args[ac++] = "--min-size";
1602                 args[ac++] = min_size_arg;
1603         }
1604
1605         if (max_size && am_sender) {
1606                 args[ac++] = "--max-size";
1607                 args[ac++] = max_size_arg;
1608         }
1609
1610         if (io_timeout) {
1611                 if (asprintf(&arg, "--timeout=%d", io_timeout) < 0)
1612                         goto oom;
1613                 args[ac++] = arg;
1614         }
1615
1616         if (bwlimit) {
1617                 if (asprintf(&arg, "--bwlimit=%d", bwlimit) < 0)
1618                         goto oom;
1619                 args[ac++] = arg;
1620         }
1621
1622         if (backup_dir) {
1623                 args[ac++] = "--backup-dir";
1624                 args[ac++] = backup_dir;
1625         }
1626
1627         /* Only send --suffix if it specifies a non-default value. */
1628         if (strcmp(backup_suffix, backup_dir ? "" : BACKUP_SUFFIX) != 0) {
1629                 /* We use the following syntax to avoid weirdness with '~'. */
1630                 if (asprintf(&arg, "--suffix=%s", backup_suffix) < 0)
1631                         goto oom;
1632                 args[ac++] = arg;
1633         }
1634
1635         if (am_sender) {
1636                 if (delete_excluded)
1637                         args[ac++] = "--delete-excluded";
1638                 else if (delete_before == 1 || delete_after)
1639                         args[ac++] = "--delete";
1640                 if (delete_before > 1)
1641                         args[ac++] = "--delete-before";
1642                 if (delete_during)
1643                         args[ac++] = "--delete-during";
1644                 if (delete_after)
1645                         args[ac++] = "--delete-after";
1646                 if (force_delete)
1647                         args[ac++] = "--force";
1648                 if (write_batch < 0)
1649                         args[ac++] = "--only-write-batch=X";
1650                 if (am_root > 1)
1651                         args[ac++] = "--super";
1652                 if (size_only)
1653                         args[ac++] = "--size-only";
1654         }
1655
1656         if (modify_window_set) {
1657                 if (asprintf(&arg, "--modify-window=%d", modify_window) < 0)
1658                         goto oom;
1659                 args[ac++] = arg;
1660         }
1661
1662         if (checksum_seed) {
1663                 if (asprintf(&arg, "--checksum-seed=%d", checksum_seed) < 0)
1664                         goto oom;
1665                 args[ac++] = arg;
1666         }
1667
1668         if (partial_dir && am_sender) {
1669                 if (partial_dir != tmp_partialdir) {
1670                         args[ac++] = "--partial-dir";
1671                         args[ac++] = partial_dir;
1672                 }
1673                 if (delay_updates)
1674                         args[ac++] = "--delay-updates";
1675         } else if (keep_partial && am_sender)
1676                 args[ac++] = "--partial";
1677
1678         if (ignore_errors)
1679                 args[ac++] = "--ignore-errors";
1680
1681         if (copy_unsafe_links)
1682                 args[ac++] = "--copy-unsafe-links";
1683
1684         if (safe_symlinks)
1685                 args[ac++] = "--safe-links";
1686
1687         if (numeric_ids)
1688                 args[ac++] = "--numeric-ids";
1689
1690         if (ignore_existing && am_sender)
1691                 args[ac++] = "--ignore-existing";
1692
1693         /* Backward compatibility: send --existing, not --ignore-non-existing. */
1694         if (ignore_non_existing && am_sender)
1695                 args[ac++] = "--existing";
1696
1697         if (append_mode)
1698                 args[ac++] = "--append";
1699         else if (inplace)
1700                 args[ac++] = "--inplace";
1701
1702         if (tmpdir && am_sender) {
1703                 args[ac++] = "--temp-dir";
1704                 args[ac++] = tmpdir;
1705         }
1706
1707         if (basis_dir[0] && am_sender) {
1708                 /* the server only needs this option if it is not the sender,
1709                  *   and it may be an older version that doesn't know this
1710                  *   option, so don't send it if client is the sender.
1711                  */
1712                 int i;
1713                 for (i = 0; i < basis_dir_cnt; i++) {
1714                         args[ac++] = dest_option;
1715                         args[ac++] = basis_dir[i];
1716                 }
1717         }
1718
1719         if (files_from && (!am_sender || filesfrom_host)) {
1720                 if (filesfrom_host) {
1721                         args[ac++] = "--files-from";
1722                         args[ac++] = files_from;
1723                         if (eol_nulls)
1724                                 args[ac++] = "--from0";
1725                 } else {
1726                         args[ac++] = "--files-from=-";
1727                         args[ac++] = "--from0";
1728                 }
1729                 if (!relative_paths)
1730                         args[ac++] = "--no-relative";
1731         }
1732         if (relative_paths && !implied_dirs && !am_sender)
1733                 args[ac++] = "--no-implied-dirs";
1734
1735         if (fuzzy_basis && am_sender)
1736                 args[ac++] = "--fuzzy";
1737
1738         if (remove_sent_files)
1739                 args[ac++] = "--remove-sent-files";
1740
1741         *argc = ac;
1742         return;
1743
1744     oom:
1745         out_of_memory("server_options");
1746 }
1747
1748 /* Look for a HOST specfication of the form "HOST:PATH", "HOST::PATH", or
1749  * "rsync://HOST:PORT/PATH".  If found, *host_ptr will be set to some allocated
1750  * memory with the HOST.  If a daemon-accessing spec was specified, the value
1751  * of *port_ptr will contain a non-0 port number, otherwise it will be set to
1752  * 0.  The return value is a pointer to the PATH.  Note that the HOST spec can
1753  * be an IPv6 literal address enclosed in '[' and ']' (such as "[::1]" or
1754  * "[::ffff:127.0.0.1]") which is returned without the '[' and ']'. */
1755 char *check_for_hostspec(char *s, char **host_ptr, int *port_ptr)
1756 {
1757         char *p;
1758         int not_host;
1759
1760         if (port_ptr && strncasecmp(URL_PREFIX, s, strlen(URL_PREFIX)) == 0) {
1761                 char *path;
1762                 int hostlen;
1763                 s += strlen(URL_PREFIX);
1764                 if ((p = strchr(s, '/')) != NULL) {
1765                         hostlen = p - s;
1766                         path = p + 1;
1767                 } else {
1768                         hostlen = strlen(s);
1769                         path = "";
1770                 }
1771                 if (*s == '[' && (p = strchr(s, ']')) != NULL) {
1772                         s++;
1773                         hostlen = p - s;
1774                         if (p[1] == ':')
1775                                 *port_ptr = atoi(p+2);
1776                 } else {
1777                         if ((p = strchr(s, ':')) != NULL) {
1778                                 hostlen = p - s;
1779                                 *port_ptr = atoi(p+1);
1780                         }
1781                 }
1782                 if (!*port_ptr)
1783                         *port_ptr = RSYNC_PORT;
1784                 *host_ptr = new_array(char, hostlen + 1);
1785                 strlcpy(*host_ptr, s, hostlen + 1);
1786                 return path;
1787         }
1788
1789         if (*s == '[' && (p = strchr(s, ']')) != NULL && p[1] == ':') {
1790                 s++;
1791                 *p = '\0';
1792                 not_host = strchr(s, '/') || !strchr(s, ':');
1793                 *p = ']';
1794                 if (not_host)
1795                         return NULL;
1796                 p++;
1797         } else {
1798                 if (!(p = strchr(s, ':')))
1799                         return NULL;
1800                 *p = '\0';
1801                 not_host = strchr(s, '/') != NULL;
1802                 *p = ':';
1803                 if (not_host)
1804                         return NULL;
1805         }
1806
1807         *host_ptr = new_array(char, p - s + 1);
1808         strlcpy(*host_ptr, s, p - s + 1);
1809
1810         if (p[1] == ':') {
1811                 if (port_ptr && !*port_ptr)
1812                         *port_ptr = RSYNC_PORT;
1813                 return p + 2;
1814         }
1815         if (port_ptr)
1816                 *port_ptr = 0;
1817
1818         return p + 1;
1819 }